package org.bouncycastle.asn1.test;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERInputStream;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DEROutputStream;
import org.bouncycastle.asn1.pkcs.EncryptedPrivateKeyInfo;
import org.bouncycastle.asn1.util.DERDump;
import org.bouncycastle.util.encoders.Base64;
import org.bouncycastle.util.test.SimpleTestResult;
import org.bouncycastle.util.test.Test;
import org.bouncycastle.util.test.TestResult;

/**
 * Test the reading and writing of EncryptedPrivateKeyInfo objects using
 * the test vectors provided at
 * <a href=http://www.rsasecurity.com/rsalabs/pkcs/pkcs-5/index.html>
 * RSA's PKCS5 Page</a>
 * <p>
 * The vectors are Base 64 encoded and encrypted using the password "password"
 * (without quotes). They should all yield the same PrivateKeyInfo object.
 */
public class EncryptedPrivateKeyInfoTest
    implements Test
{
    static byte[] sample1 = Base64.decode(
        "MIIBozA9BgkqhkiG9w0BBQ0wMDAbBgkqhkiG9w0BBQwwDgQIfWBDXwLp4K4CAggA"
      + "MBEGBSsOAwIHBAiaCF/AvOgQ6QSCAWDWX4BdAzCRNSQSANSuNsT5X8mWYO27mr3Y"
      + "9c9LoBVXGNmYWKA77MI4967f7SmjNcgXj3xNE/jmnVz6hhsjS8E5VPT3kfyVkpdZ"
      + "0lr5e9Yk2m3JWpPU7++v5zBkZmC4V/MwV/XuIs6U+vykgzMgpxQg0oZKS9zgmiZo"
      + "f/4dOCL0UtCDnyOSvqT7mCVIcMDIEKu8QbVlgZYBop08l60EuEU3gARUo8WsYQmO"
      + "Dz/ldx0Z+znIT0SXVuOwc+RVItC5T/Qx+aijmmpt+9l14nmaGBrEkmuhmtdvU/4v"
      + "aptewGRgmjOfD6cqK+zs0O5NrrJ3P/6ZSxXj91CQgrThGfOv72bUncXEMNtc8pks"
      + "2jpHFjGMdKufnadAD7XuMgzkkaklEXZ4f5tU6heIIwr51g0GBEGF96gYPFnjnSQM"
      + "75JE02Clo+DfcfXpcybPTwwFg2jd6JTTOfkdf6OdSlA/1XNK43FA");

    static byte[] sample2 = Base64.decode(
        "MIIBpjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIeFeOWl1jywYCAggA"
      + "MBQGCCqGSIb3DQMHBAjUJ5eGBhQGtQSCAWBrHrRgqO8UUMLcWzZEtpk1l3mjxiF/"
      + "koCMkHsFwowgyWhEbgIkTgbSViK54LVK8PskekcGNLph+rB6bGZ7pPbL5pbXASJ8"
      + "+MkQcG3FZdlS4Ek9tTJDApj3O1UubZGFG4uvTlJJFbF1BOJ3MkY3XQ9Gl1qwv7j5"
      + "6e103Da7Cq9+oIDKmznza78XXQYrUsPo8mJGjUxPskEYlzwvHjKubRnYm/K6RKhi"
      + "5f4zX4BQ/Dt3H812ZjRXrsjAJP0KrD/jyD/jCT7zNBVPH1izBds+RwizyQAHwfNJ"
      + "BFR78TH4cgzB619X47FDVOnT0LqQNVd0O3cSwnPrXE9XR3tPayE+iOB15llFSmi8"
      + "z0ByOXldEpkezCn92Umk++suzIVj1qfsK+bv2phZWJPbLEIWPDRHUbYf76q5ArAr"
      + "u4xtxT/hoK3krEs/IN3d70qjlUJ36SEw1UaZ82PWhakQbdtu39ZraMJB");

    static byte[] sample3 = Base64.decode(
        "MIIBrjBIBgkqhkiG9w0BBQ0wOzAeBgkqhkiG9w0BBQwwEQQIrHyQPBZqWLUCAggA"
      + "AgEQMBkGCCqGSIb3DQMCMA0CAToECEhbh7YZKiPSBIIBYCT1zp6o5jpFlIkgwPop"
      + "7bW1+8ACr4exqzkeb3WflQ8cWJ4cURxzVdvxUnXeW1VJdaQZtjS/QHs5GhPTG/0f"
      + "wtvnaPfwrIJ3FeGaZfcg2CrYhalOFmEb4xrE4KyoEQmUN8tb/Cg94uzd16BOPw21"
      + "RDnE8bnPdIGY7TyL95kbkqH23mK53pi7h+xWIgduW+atIqDyyt55f7WMZcvDvlj6"
      + "VpN/V0h+qxBHL274WA4dj6GYgeyUFpi60HdGCK7By2TBy8h1ZvKGjmB9h8jZvkx1"
      + "MkbRumXxyFsowTZawyYvO8Um6lbfEDP9zIEUq0IV8RqH2MRyblsPNSikyYhxX/cz"
      + "tdDxRKhilySbSBg5Kr8OfcwKp9bpinN96nmG4xr3Tch1bnVvqJzOQ5+Vva2WwVvH"
      + "2JkWvYm5WaANg4Q6bRxu9vz7DuhbJjQdZbxFezIAgrJdSe92B00jO/0Kny1WjiVO"
      + "6DA=");

    public String getName()
    {
        return "EncryptedPrivateKeyInfoTest";
    }

    private TestResult test(
        int     id,
        byte[]  sample)
    {
        ByteArrayInputStream    bIn = new ByteArrayInputStream(sample);
        DERInputStream          dIn = new DERInputStream(bIn);
        EncryptedPrivateKeyInfo info;

        try
        {
            info = new EncryptedPrivateKeyInfo((ASN1Sequence)dIn.readObject());
        }
        catch (Exception e)
        {
            return new SimpleTestResult(false, getName() + ": test " + id + " failed construction - exception " + e.toString());
        }
    
        ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
        DEROutputStream         dOut = new DEROutputStream(bOut);

        try
        {
            dOut.writeObject(info);
        }
        catch (Exception e)
        {
            return new SimpleTestResult(false, getName() + ": test " + id + " failed writing - exception " + e.toString());
        }

        byte[]  bytes = bOut.toByteArray();

        if (bytes.length != sample.length)
        {
            try
            {
                bIn = new ByteArrayInputStream(bytes);
                dIn = new DERInputStream(bIn);

                DERObject   obj = (DERObject)dIn.readObject();
    
                return new SimpleTestResult(false, getName() + ": test " + id + " length mismatch - expected " + sample.length + System.getProperty("line.separator") + DERDump.dumpAsString(info) + " got " + bytes.length + System.getProperty("line.separator") + DERDump.dumpAsString(obj));
            }
            catch (Exception e)
            {
                e.printStackTrace();
                return new SimpleTestResult(false, getName() + ": test " + id + " length mismatch - exception " + e.toString());
            }
        }

        for (int i = 0; i != bytes.length; i++)
        {
            if (bytes[i] != sample[i])
            {
                return new SimpleTestResult(false, getName() + ": test " + id + " data mismatch");
            }
        }

        return new SimpleTestResult(true, getName() + ": test " + id + " Okay");
    }

    public TestResult perform()
    {
        TestResult  result = test(0, sample1);
        if (!result.isSuccessful())
        {
            return result;
        }

        result = test(1, sample2);
        if (!result.isSuccessful())
        {
            return result;
        }

        result = test(2, sample3);
        if (!result.isSuccessful())
        {
            return result;
        }

        return new SimpleTestResult(true, getName() + ": Okay");
    }

    public static void main(
        String[]    args)
    {
        Test    test = new EncryptedPrivateKeyInfoTest();

        TestResult  result = test.perform();

        System.out.println(result.toString());
    }
}
